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5 <br /> WA <br /> Y� <br /> UNIFIED SOIL CLASSIFICATION SYSTEM <br /> MAJOR DIVISIONS LTR DESCRIPTION MA.IOR DIVISIONS LTR DESCRIPTION <br /> Well—graded graveis or graver and Inorganic sllis and very line sands, <br /> ON sand mixtures, little or no fines. ML rack flour, silty or clgyay fine <br /> SILTS sands or ayey silts with Might <br /> Poorly—graded gravels or grovel cl <br /> loeticl . <br /> GRAS- GP sand mixture, little or no linos. AND <br /> AND Ctr'rs inorganic clays or law to medium <br /> GRAVELLY Silty gravels, gravel—sand—slit LL <50 CL plasticity, gfave!ly clays, sandy <br /> SOILS GN mixtures, clays, lean clays. <br /> Clayey grnvels, gravel—sand—clay OL Organic slits and organic silt—clays <br /> COARSE cc mixtures. FINE of law plasticity, <br /> Gj ED Well—graded sands or gravelly GRAINED lnorgania clays or low to medium <br /> SW aande, little or no fines, SOILS MH ploaftity, gravelly clays, oondy <br /> SAND SILTS cloys, lean cloys. <br /> SP Poorly—graded sands or gravelly AND Inorganic clays of hi h plasticity. <br /> AND sand mixture, Mlle or no fines. CIA CH (of Clays. 9 <br /> SANDY <br /> SO`' SM Silty wady, sand—silt mixtures. Ll >50 CH Organic clays of medium to high <br /> plasticity. <br /> Clayey sands, $arid—silt mixtures. HIGHLY ORGANIC I PT jPeat and other highly organic Soils. <br /> so!Is <br /> Sand pack <br /> Depth through which <br /> sampler is driven. <br /> Bentonite annular seal <br /> Relatively undisturbed sompte <br /> EJcement annular seal <br /> Misted sample <br /> Blank PVC <br /> .r Ground water level <br /> = observed in boring <br /> Machine—slotted PVC <br /> S-10 Sample number <br /> PVC Centralizer <br /> PID Phatoionization detector reading <br /> s� <br /> BLOW/FT REPRESENTS THE NUMBER OF BLOWS OF A <br /> 140—POUND HAMMER FALLING 30 INCHES TO DRIVE <br /> THE SAMPLER THROUGH THE LAST 12 INCHES OF AN <br /> 18 INCH PENETRATION. <br /> -' DASHED LINES SEPARATING UNI'`- OF THE LOG <br /> REPRESENT APPROXIMATE BOUNDARIES ONLY. <br /> ACTUAL BOUNDARIES MAY BE GRADUAL. LOGS <br /> REPRESENT SUBSURFACE CONDITIONS IN THE <br /> BORING AT THE TIME OF DRILLING ONLY. <br /> UNIMED SOL CLASSIRCATiON SYSTEM PLATE <br /> L, <br /> AND SYMBOL KEY <br /> Former.Unocai Service Staltlon No. 2859 P- <br /> 1885 Pacific Avanue <br /> PROJECT NO. 38012-5 Stookton, California <br />